Fic. 25. Astream map, such as 
will serve as a basis for the work 
herewith outlined. 
Avboretum 
toataae raterpales fe 
seale 1fanso ft 
List the plants and animals 
studied on a separate sheet, with 
data as indicated on pp. 43 and 44. 
Indicate diagrammatically on this 
map: 
The waterfalls and riffles. 
rubble, 
I. 
2. The areas of rock, 
gravel and mud bottom. 
3. The principal water-plant 
formations. 
The haunts of the commoner 
4. 
fishes. 
